Work holder



2 Sheets-Sheet l H. zHNE'rz woRx HOLDER July 21, 1953 Filed Feb. 9, 1951 'July 21, 1953 Filed Feb. 9, 1951 H. zHNER WORK HOLDER 2- shets-shet 2 Patented July 21, 195.3

Application February 9,1951, Serial No. 210,208` In Switzerland February 10, 1950 2 Claims.

The present invention relates to a work holder with a threaded spindle rotatably supported in a frame formed, for instance, as a casing, on which spindle a nut is carried so as to be longitudinally displaceable. On the frame, fixing members are also provided, thus making itpossible tox the work holder, to a table top for example.

The work holder according to the invention is designed in such a way that cheeks projecting in diiTerent directions are arranged on the frame and on the nut on the threaded spindle.

In the accompanying drawing some forms of execution of the object of the inventionare illustrated by way of example, where:

' Fig. 1 shows a side view, with a part in longitudinal section,

Fig. 2 shows a section on the line II--II of Fig. 1,

Fig. 3 shows a partial longitudinal section, an auxiliary jaw being added to one side of a spindle-carried nut.

Fig. 4 shows a side View similar to Figure 3, but substitutes a modified auxiliary jaw.

The work holder illustrated in Figs. l-3 has a frame I in the form of a casing and made of cast-iron or sectional iron or light metal, the frame carrying a laterally arranged clamping or supporting plate 2. On the same side of the frame I as the plate 2, but at some distance from it, lugs 3 are tted in` which clamping screws 4 are held. By these latter screws it is possible to clamp the work holder rmly to. a table top 5. The frame I is open downwards and upwards. Through it, there passes a spindle 6, which is provided in its middle part I with a square thread and is rotatable in the frame I, but supported indisplaceably in the frame. At one end the spindle carries a handcrank 8 by means of which it can be rotated, whilst the opposite end is provided with an opening 9 for taking a drill or screwdriver (not illustrated). This drill or screwdriver can be secured in its working position by means of a clamping screw I 0. In the illustrated example, the spindle 6 is formed in two parts, in that it carries on its free end a sleeve II, to which it is connected by a rivet I2. The spindle 6 could, of course, also be made in one single part, and other means could be provided for iixing the drill.

On the frame I, cheeks I3, I4 firmly connected to it are provided, the cheek I4 projecting in the axial direction beyond the frame I. On the middle part l of the spindle a nut I can kbe displaced longitudinally but cannot rotate. To this nut a cheek I4' having a base portion extending in an axial direction along the frame I is rmly connected, this cheek cooperating with the cheek I4.

a nose I6 engages behind a projection Il on the nut I5. The cheek I3 cooperates with the cheek I3 permanently connected to the casing I and projecting transverselyrof said casing. I3 of different shapes can be fitted to the threaded nutl I5. Thus Fig. 4 for example shows a cheek I3 with a fairly long bar 20. This execution makes it possible to x Very large workpieces. The tool according to Figs. 1-4 may be used as a general service clamp. the objects which are to be clamped together being gripped between the cheeks I3 and I3 or I3.

The illustrated tool is capable of multiple applications. It is, for example, possible to clamp a saw `between the cheeks I4, I4 and then sharpen the teeth. In consequence of the illustrated and described form of the cheeks I4, I4 the xing of this saw will in no way be impeded by the frame I.V Just as desired, the whole tool can then be xed to the table top in such a way that the saw hangs down beside the table top or lies along it.

With the variant according to Fig. 4 it is possible to x comparatively big workpieces, for instance boards and rails, whilst the cheeks |3, I3 according to Fig. 3 ensure perfect xing of very small workpieces. The tool may also be used as general service clamp and, as mentioned above, as drill or as screwdriver when the corresponding tool is xed in the hole 9 (Fig. 1).

What I claim is:

1. A work holder including a longitudinally eX- tending frame having parallel spaced side walls and end walls, a threadedspindle extending beother end positioned beyond the other end walll of said frame, and said other end of said bar carrying a cheek confronting the cheek on said one end wall.

2. A work holder including a longitudinally extending frame having parallel spaced side walls On the other hand, a cheek I3. is detachably connected to the nut I5, in that f Cheeksy 3 and end Walls, a threaded spindle extending between and parallel to said side walls and means in said end walls for rotatably supporting said spinelle, means attached to one end of said spindle for rotating the latter, means on one of said side walls for attaching the frame to a supporting member, a cheek secured on one of said end walls, a nut on said threaded spindle arranged to move axially of the latter when `the spindle is rotated, an elongate bar having one end secured on said nut, said bar extending parallel to said threaded spindle and having .its other end positioned beyond the other end wall of said frame, said other end of :said-:bar `carry-- ing a cheek confronting thecheek on said one end wall, and means for detachably securing said bar to said nut.

HANS ZAHNER.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 292,342 vMcMillan Jan. 22, 1884 800,685 Scoggins Oct. 3, 1905 995,454 Guptill June 20, 1911 '1,476,628 McDaniel et al Dec. 4, 1923 1,568,563 Mader Jan. 5, 1926 2,515,533 Suter July 18, 1950 

